Any cheap and good venue for baby's 1st bday?

You can also consider booking a chalet! That way, you can even have different days for different groups. It can also double up as a family staycation (cheaper alternative to hotel stays.. hee). You can also consider Tiong Bahru Adventure Playground (https://www.nparks.gov.sg/gardens-parks-and-nature/parks-and-nature-reserves/tiong-bahru-park). I thought it will be fun for the children but may be a little more difficult to organize given the space. You can also book rooms at community clubs if you found one that is suitable. Here's the link to search for available options near you: https://one.pa.gov.sg/CRMSPortal/CRMSPortal.portal;jsessionid=QLPBW8xd7r2y8R1LjzWpvVL1GpLfY8yvmTdjFK1LfJHxJXvQ7CJj!245852156?_nfpb=true&_st=&_windowLabel=CRMSPortal_1&_urlType=render&_mode=view&wlpCRMSPortal_1_action=RBMFacilityPublicBooking&_pageLabel=CRMSPortal_page_1 Condo function room is a good suggestion as well. :)